def METHOD_NAME():
    sexp = rinterface.baseenv.find('letters')
    assert sexp.typeof == rinterface.RTYPES.STRSXP
    sexp = rinterface.baseenv.find('pi')
    assert sexp.typeof == rinterface.RTYPES.REALSXP
    sexp = rinterface.baseenv.find('options')
    assert sexp.typeof == rinterface.RTYPES.CLOSXP