code: public Quaternionf set(AxisAngle4f axisAngle) {
          return setAngleAxis(axisAngle.angle, axisAngle.x, axisAngle.y, axisAngle.z);
      }
docs: Set this quaternion to a rotation equivalent to the given {@link AxisAngle4f}.
  
  @param axisAngle
  the {@link AxisAngle4f}
  @return this