question: returns the length of the vector . concode_field_sep double x concode_elem_sep double y concode_field_sep double getX concode_elem_sep double getY concode_elem_sep double getAngle concode_elem_sep int hashCode concode_elem_sep boolean equals
target: double function ( ) { return Math . sqrt ( ( this . x * this . x ) + ( this . y * this . y ) ) ; }