code: public void getCoefficients(double[] coefs) {
  		if (coefs.length < 6)
  			throw new GeometryException(
  					"Buffer is too small. coefs needs 6 members");
  
  		coefs[0] = xx;
  		coefs[1] = xy;
  		coefs[2] = xd;
  		coefs[3] = yx;
  		coefs[4] = yy;
  		coefs[5] = yd;
  	}
docs: Writes the matrix coefficients in the order XX, XY, XD, YX, YY, YD into
  the given array.
  
  @param coefs
  The array into which the coefficients are returned. Should be
  of size 6 elements.