code: public Matrix4f set(Matrix4fc m) {
          if (m instanceof Matrix4f) {
              MemUtil.INSTANCE.copy((Matrix4f) m, this);
          } else {
              setMatrix4fc(m);
          }
          this._properties(m.properties());
          return this;
      }
docs: Store the values of the given matrix <code>m</code> into <code>this</code> matrix.
  
  @see #Matrix4f(Matrix4fc)
  @see #get(Matrix4f)
  
  @param m
  the matrix to copy the values from
  @return this