public function get_item_schema() {
		if ( $this->schema ) {
			return $this->add_additional_fields_schema( $this->schema );
		}

		$schema = array(
			'$schema'    => 'http://json-schema.org/draft-04/schema#',
			'title'      => 'taxonomy',
			'type'       => 'object',
			'properties' => array(
				'capabilities' => array(
					'description' => __( 'All capabilities used by the taxonomy.' ),
					'type'        => 'object',
					'context'     => array( 'edit' ),
					'readonly'    => true,
				),
				'description'  => array(
					'description' => __( 'A human-readable description of the taxonomy.' ),
					'type'        => 'string',
					'context'     => array( 'view', 'edit' ),
					'readonly'    => true,
				),
				'hierarchical' => array(
					'description' => __( 'Whether or not the taxonomy should have children.' ),
					'type'        => 'boolean',
					'context'     => array( 'view', 'edit' ),
					'readonly'    => true,
				),
				'labels'       => array(
					'description' => __( 'Human-readable labels for the taxonomy for various contexts.' ),
					'type'        => 'object',
					'context'     => array( 'edit' ),
					'readonly'    => true,
				),
				'name'         => array(
					'description' => __( 'The title for the taxonomy.' ),
					'type'        => 'string',
					'context'     => array( 'view', 'edit', 'embed' ),
					'readonly'    => true,
				),
				'slug'         => array(
					'description' => __( 'An alphanumeric identifier for the taxonomy.' ),
					'type'        => 'string',
					'context'     => array( 'view', 'edit', 'embed' ),
					'readonly'    => true,
				),
				'show_cloud'   => array(
					'description' => __( 'Whether or not the term cloud should be displayed.' ),
					'type'        => 'boolean',
					'context'     => array( 'edit' ),
					'readonly'    => true,
				),
				'types'        => array(
					'description' => __( 'Types associated with the taxonomy.' ),
					'type'        => 'array',
					'items'       => array(
						'type' => 'string',
					),
					'context'     => array( 'view', 'edit' ),
					'readonly'    => true,
				),
				'rest_base'    => array(
					'description' => __( 'REST base route for the taxonomy.' ),
					'type'        => 'string',
					'context'     => array( 'view', 'edit', 'embed' ),
					'readonly'    => true,
				),
				'visibility'   => array(
					'description' => __( 'The visibility settings for the taxonomy.' ),
					'type'        => 'object',
					'context'     => array( 'edit' ),
					'readonly'    => true,
					'properties'  => array(
						'public'             => array(
							'description' => __( 'Whether a taxonomy is intended for use publicly either via the admin interface or by front-end users.' ),
							'type'        => 'boolean',
						),
						'publicly_queryable' => array(
							'description' => __( 'Whether the taxonomy is publicly queryable.' ),
							'type'        => 'boolean',
						),
						'show_ui'            => array(
							'description' => __( 'Whether to generate a default UI for managing this taxonomy.' ),
							'type'        => 'boolean',
						),
						'show_admin_column'  => array(
							'description' => __( 'Whether to allow automatic creation of taxonomy columns on associated post-types table.' ),
							'type'        => 'boolean',
						),
						'show_in_nav_menus'  => array(
							'description' => __( 'Whether to make the taxonomy available for selection in navigation menus.' ),
							'type'        => 'boolean',
						),
						'show_in_quick_edit' => array(
							'description' => __( 'Whether to show the taxonomy in the quick/bulk edit panel.' ),
							'type'        => 'boolean',
						),

					),
				),
			),
		);

		$this->schema = $schema;
		return $this->add_additional_fields_schema( $this->schema );
	}