closestPointToPoint( point, clampToLine, target ) {

		const t = this.closestPointToPointParameter( point, clampToLine );

		return this.delta( target ).multiplyScalar( t ).add( this.start );

	}
Returns the closets point on the line for a given point.

@param {Vector3} point - The point to compute the closest point on the line for.
@param {boolean} clampToLine - Whether to clamp the result to the range `[0,1]` or not.
@param {Vector3} target -  The target vector that is used to store the method's result.
@return {Vector3} The closest point on the line.