<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def vprjp(vin, plane):
 """ Project a vector onto a specified plane, orthogonally. http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/vprjp_c.html :param vin: The projected vector. :type vin: 3-Element Array of floats :param plane: Plane containing vin. :type plane: spiceypy.utils.support_types.Plane :return: Vector resulting from projection. :rtype: 3-Element Array of floats """

    vin = stypes.toDoubleVector(vin)
    vout = stypes.emptyDoubleVector(3)
    libspice.vprjp_c(vin, ctypes.byref(plane), vout)
    return stypes.cVectorToPython(vout)