code: public Matrix4x3f set(Matrix4x3fc m) {
          if (m instanceof Matrix4x3f) {
              MemUtil.INSTANCE.copy((Matrix4x3f) m, this);
          } else {
              setMatrix4x3fc(m);
          }
          properties = m.properties();
          return this;
      }
docs: Store the values of the given matrix <code>m</code> into <code>this</code> matrix.
  
  @see #Matrix4x3f(Matrix4x3fc)
  @see #get(Matrix4x3f)
  
  @param m
  the matrix to copy the values from
  @return this