- /**
- * Returns a new matrix which is the result of postmultiplying this matrix by
- * the supplied argument. If this of size AxB (A rows and B columns), and the
- * argument is BxC (B rows and C columns), the result is of size AxC.
- * <p>
- * This method simply returns the result of in.preMultiply(this)
- *
- * @param in
- *
- * @return
- * @throws IllegalArgumentException
- * if the number of rows in the post-multiplier is not equal to the
- * number of columns in the multiplicand (this)
- * @see #preMultiply(Matrix)
- */