def METHOD_NAME(self, fileName = None):
    if self.getNumAnims() == 0:
        return self.setTextureFromFile(fileName)
    if fileName is None:
        fileName = self.getSourceTextureName()
    t = base.loader.loadTexture(fileName)
    if t is not None:
        self.addTexture(t, t.getYSize())
        return True
    else:
        print("Couldn't find rendererSpriteTexture file: %s" % fileName)
        return False