toArray( array = [], offset = 0 ) {

		array[ offset ] = this._x;
		array[ offset + 1 ] = this._y;
		array[ offset + 2 ] = this._z;
		array[ offset + 3 ] = this._order;

		return array;

	}
Writes the components of this Euler instance to the given array. If no array is provided,
the method returns a new instance.

@param {Array<number,number,number,string>} [array=[]] - The target array holding the Euler components.
@param {number} [offset=0] - Index of the first element in the array.
@return {Array<number,number,number,string>} The Euler components.