def METHOD_NAME(self, mat="", evalu="", **kwargs):
    """Specifies emissivity as a material property for the Radiation Matrix
    APDL Command: EMIS
    method.
    Parameters
    ----------
    mat
        Material number associated with this emissivity (500 maximum).
        Defaults to 1.
    evalu
        Emissivity for this material (0.0 < EVALU   1.0).  Enter a very
        small number for zero.
    Notes
    -----
    Specifies emissivity as a material property for the Radiation Matrix
    method. This material property can then be associated with each
    element.
    """
    command = f"EMIS,{mat},{evalu}"
    return self.run(command, **kwargs)