public function get_item_schema() {
		$schema = array(
			'$schema'    => 'http://json-schema.org/draft-04/schema#',
			'title'      => 'bp_groups',
			'type'       => 'object',
			'properties' => array(
				'id'                 => array(
					'context'     => array( 'view', 'edit' ),
					'description' => __( 'A unique numeric ID for the Group.', 'buddypress' ),
					'readonly'    => true,
					'type'        => 'integer',
				),
				'creator_id'         => array(
					'context'     => array( 'view', 'edit' ),
					'description' => __( 'The ID of the user who created the Group.', 'buddypress' ),
					'type'        => 'integer',
					'default'     => bp_loggedin_user_id(),
				),
				'name'               => array(
					'context'     => array( 'view', 'edit' ),
					'description' => __( 'The name of the Group.', 'buddypress' ),
					'type'        => 'string',
					'required'    => true,
					'arg_options' => array(
						'sanitize_callback' => 'sanitize_text_field',
					),
				),
				'slug'               => array(
					'context'     => array( 'view', 'edit' ),
					'description' => __( 'The URL-friendly slug for the Group.', 'buddypress' ),
					'type'        => 'string',
					'arg_options' => array(
						'sanitize_callback' => null, // Note: sanitization implemented in self::prepare_item_for_database().
					),
				),
				'link'               => array(
					'context'     => array( 'view', 'edit' ),
					'description' => __( 'The permalink to the Group on the site.', 'buddypress' ),
					'type'        => 'string',
					'format'      => 'uri',
					'readonly'    => true,
				),
				'description'        => array(
					'context'     => array( 'view', 'edit' ),
					'description' => __( 'The description of the Group.', 'buddypress' ),
					'type'        => 'object',
					'required'    => true,
					'arg_options' => array(
						'sanitize_callback' => null, // Note: sanitization implemented in self::prepare_item_for_database().
						'validate_callback' => null, // Note: validation implemented in self::prepare_item_for_database().
					),
					'properties'  => array(
						'raw'      => array(
							'description' => __( 'Content for the description of the Group, as it exists in the database.', 'buddypress' ),
							'type'        => 'string',
							'context'     => array( 'view', 'edit' ),
						),
						'rendered' => array(
							'description' => __( 'HTML content for the description of the Group, transformed for display.', 'buddypress' ),
							'type'        => 'string',
							'context'     => array( 'view', 'edit' ),
							'readonly'    => true,
						),
					),
				),
				'status'             => array(
					'context'     => array( 'view', 'edit' ),
					'description' => __( 'The status of the Group.', 'buddypress' ),
					'type'        => 'string',
					'enum'        => buddypress()->groups->valid_status,
					'default'     => 'public',
					'arg_options' => array(
						'sanitize_callback' => 'sanitize_key',
					),
				),
				'enable_forum'       => array(
					'context'     => array( 'view', 'edit' ),
					'description' => __( 'Whether the Group has a forum enabled or not.', 'buddypress' ),
					'type'        => 'boolean',
				),
				'parent_id'          => array(
					'context'     => array( 'view', 'edit' ),
					'description' => __( 'ID of the parent Group.', 'buddypress' ),
					'type'        => 'integer',
				),
				'date_created'       => array(
					'context'     => array( 'view', 'edit' ),
					'description' => __( "The date the Group was created, in the site's timezone.", 'buddypress' ),
					'readonly'    => true,
					'type'        => 'string',
					'format'      => 'date-time',
				),
				'admins'             => array(
					'context'     => array( 'edit' ),
					'description' => __( 'Group administrators.', 'buddypress' ),
					'readonly'    => true,
					'type'        => 'array',
					'items'       => array(
						'type' => 'object',
					),
				),
				'mods'               => array(
					'context'     => array( 'edit' ),
					'description' => __( 'Group moderators.', 'buddypress' ),
					'readonly'    => true,
					'type'        => 'array',
					'items'       => array(
						'type' => 'object',
					),
				),
				'total_member_count' => array(
					'context'     => array( 'edit' ),
					'description' => __( 'Count of all Group members.', 'buddypress' ),
					'readonly'    => true,
					'type'        => 'integer',
				),
				'last_activity'      => array(
					'context'     => array( 'edit' ),
					'description' => __( "The date the Group was last active, in the site's timezone.", 'buddypress' ),
					'type'        => 'string',
					'readonly'    => true,
					'format'      => 'date-time',
				),
			),
		);

		// Avatars.
		if ( ! bp_disable_group_avatar_uploads() ) {
			$avatar_properties = array();

			$avatar_properties['full'] = array(
				/* translators: Full image size for the group Avatar */
				'description' => sprintf( __( 'Avatar URL with full image size (%1$d x %2$d pixels).', 'buddypress' ), number_format_i18n( bp_core_avatar_full_width() ), number_format_i18n( bp_core_avatar_full_height() ) ),
				'type'        => 'string',
				'format'      => 'uri',
				'context'     => array( 'view', 'edit' ),
			);

			$avatar_properties['thumb'] = array(
				/* translators: Thumb imaze size for the group Avatar */
				'description' => sprintf( __( 'Avatar URL with thumb image size (%1$d x %2$d pixels).', 'buddypress' ), number_format_i18n( bp_core_avatar_thumb_width() ), number_format_i18n( bp_core_avatar_thumb_height() ) ),
				'type'        => 'string',
				'format'      => 'uri',
				'context'     => array( 'view', 'edit' ),
			);

			$schema['properties']['avatar_urls'] = array(
				'description' => __( 'Avatar URLs for the group.', 'buddypress' ),
				'type'        => 'object',
				'context'     => array( 'view', 'edit' ),
				'readonly'    => true,
				'properties'  => $avatar_properties,
			);
		}

		/**
		 * Filters the group schema.
		 *
		 * @param array $schema The endpoint schema.
		 */
		return apply_filters( 'bp_rest_group_schema', $this->add_additional_fields_schema( $schema ) );
	}