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+<?php
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: google/protobuf/field_mask.proto
+
+namespace Google\Protobuf;
+
+use Google\Protobuf\Internal\GPBType;
+use Google\Protobuf\Internal\RepeatedField;
+use Google\Protobuf\Internal\GPBUtil;
+
+/**
+ * `FieldMask` represents a set of symbolic field paths, for example:
+ *     paths: "f.a"
+ *     paths: "f.b.d"
+ * Here `f` represents a field in some root message, `a` and `b`
+ * fields in the message found in `f`, and `d` a field found in the
+ * message in `f.b`.
+ * Field masks are used to specify a subset of fields that should be
+ * returned by a get operation or modified by an update operation.
+ * Field masks also have a custom JSON encoding (see below).
+ * # Field Masks in Projections
+ * When used in the context of a projection, a response message or
+ * sub-message is filtered by the API to only contain those fields as
+ * specified in the mask. For example, if the mask in the previous
+ * example is applied to a response message as follows:
+ *     f {
+ *       a : 22
+ *       b {
+ *         d : 1
+ *         x : 2
+ *       }
+ *       y : 13
+ *     }
+ *     z: 8
+ * The result will not contain specific values for fields x,y and z
+ * (their value will be set to the default, and omitted in proto text
+ * output):
+ *     f {
+ *       a : 22
+ *       b {
+ *         d : 1
+ *       }
+ *     }
+ * A repeated field is not allowed except at the last position of a
+ * paths string.
+ * If a FieldMask object is not present in a get operation, the
+ * operation applies to all fields (as if a FieldMask of all fields
+ * had been specified).
+ * Note that a field mask does not necessarily apply to the
+ * top-level response message. In case of a REST get operation, the
+ * field mask applies directly to the response, but in case of a REST
+ * list operation, the mask instead applies to each individual message
+ * in the returned resource list. In case of a REST custom method,
+ * other definitions may be used. Where the mask applies will be
+ * clearly documented together with its declaration in the API.  In
+ * any case, the effect on the returned resource/resources is required
+ * behavior for APIs.
+ * # Field Masks in Update Operations
+ * A field mask in update operations specifies which fields of the
+ * targeted resource are going to be updated. The API is required
+ * to only change the values of the fields as specified in the mask
+ * and leave the others untouched. If a resource is passed in to
+ * describe the updated values, the API ignores the values of all
+ * fields not covered by the mask.
+ * If a repeated field is specified for an update operation, the existing
+ * repeated values in the target resource will be overwritten by the new values.
+ * Note that a repeated field is only allowed in the last position of a `paths`
+ * string.
+ * If a sub-message is specified in the last position of the field mask for an
+ * update operation, then the existing sub-message in the target resource is
+ * overwritten. Given the target message:
+ *     f {
+ *       b {
+ *         d : 1
+ *         x : 2
+ *       }
+ *       c : 1
+ *     }
+ * And an update message:
+ *     f {
+ *       b {
+ *         d : 10
+ *       }
+ *     }
+ * then if the field mask is:
+ *  paths: "f.b"
+ * then the result will be:
+ *     f {
+ *       b {
+ *         d : 10
+ *       }
+ *       c : 1
+ *     }
+ * However, if the update mask was:
+ *  paths: "f.b.d"
+ * then the result would be:
+ *     f {
+ *       b {
+ *         d : 10
+ *         x : 2
+ *       }
+ *       c : 1
+ *     }
+ * In order to reset a field's value to the default, the field must
+ * be in the mask and set to the default value in the provided resource.
+ * Hence, in order to reset all fields of a resource, provide a default
+ * instance of the resource and set all fields in the mask, or do
+ * not provide a mask as described below.
+ * If a field mask is not present on update, the operation applies to
+ * all fields (as if a field mask of all fields has been specified).
+ * Note that in the presence of schema evolution, this may mean that
+ * fields the client does not know and has therefore not filled into
+ * the request will be reset to their default. If this is unwanted
+ * behavior, a specific service may require a client to always specify
+ * a field mask, producing an error if not.
+ * As with get operations, the location of the resource which
+ * describes the updated values in the request message depends on the
+ * operation kind. In any case, the effect of the field mask is
+ * required to be honored by the API.
+ * ## Considerations for HTTP REST
+ * The HTTP kind of an update operation which uses a field mask must
+ * be set to PATCH instead of PUT in order to satisfy HTTP semantics
+ * (PUT must only be used for full updates).
+ * # JSON Encoding of Field Masks
+ * In JSON, a field mask is encoded as a single string where paths are
+ * separated by a comma. Fields name in each path are converted
+ * to/from lower-camel naming conventions.
+ * As an example, consider the following message declarations:
+ *     message Profile {
+ *       User user = 1;
+ *       Photo photo = 2;
+ *     }
+ *     message User {
+ *       string display_name = 1;
+ *       string address = 2;
+ *     }
+ * In proto a field mask for `Profile` may look as such:
+ *     mask {
+ *       paths: "user.display_name"
+ *       paths: "photo"
+ *     }
+ * In JSON, the same mask is represented as below:
+ *     {
+ *       mask: "user.displayName,photo"
+ *     }
+ * # Field Masks and Oneof Fields
+ * Field masks treat fields in oneofs just as regular fields. Consider the
+ * following message:
+ *     message SampleMessage {
+ *       oneof test_oneof {
+ *         string name = 4;
+ *         SubMessage sub_message = 9;
+ *       }
+ *     }
+ * The field mask can be:
+ *     mask {
+ *       paths: "name"
+ *     }
+ * Or:
+ *     mask {
+ *       paths: "sub_message"
+ *     }
+ * Note that oneof type names ("test_oneof" in this case) cannot be used in
+ * paths.
+ *
+ * Generated from protobuf message <code>google.protobuf.FieldMask</code>
+ */
+class FieldMask extends \Google\Protobuf\Internal\Message
+{
+    /**
+     * The set of field mask paths.
+     *
+     * Generated from protobuf field <code>repeated string paths = 1;</code>
+     */
+    private $paths;
+
+    public function __construct() {
+        \GPBMetadata\Google\Protobuf\FieldMask::initOnce();
+        parent::__construct();
+    }
+
+    /**
+     * The set of field mask paths.
+     *
+     * Generated from protobuf field <code>repeated string paths = 1;</code>
+     * @return \Google\Protobuf\Internal\RepeatedField
+     */
+    public function getPaths()
+    {
+        return $this->paths;
+    }
+
+    /**
+     * The set of field mask paths.
+     *
+     * Generated from protobuf field <code>repeated string paths = 1;</code>
+     * @param string[]|\Google\Protobuf\Internal\RepeatedField $var
+     * @return $this
+     */
+    public function setPaths($var)
+    {
+        $arr = GPBUtil::checkRepeatedField($var, \Google\Protobuf\Internal\GPBType::STRING);
+        $this->paths = $arr;
+
+        return $this;
+    }
+
+}
+