def METHOD_NAME(self):
    node = self.mesh.entity('node')      
    isFreeNode = self.get_free_node_info()        
    for i in range(0, 100):
        A, B = self.grad()
        self.Jacobi(node, A, B, isFreeNode)		
        #self.BlockJacobi(node, A, B, isFreeNode)
        #self.BlockGauss(node, A, B, isFreeNode)