setReferenceSpaceType( type ) {

		this._referenceSpaceType = type;

		if ( this.isPresenting === true ) {

			console.warn( 'THREE.XRManager: Cannot change reference space type while presenting.' );

		}

	}
Sets the reference space type.

This method can not be used during a XR session.

@param {XRReferenceSpaceType} type - The reference space type.