code: def sympify_mpmath_matrix(arg):
      mat = [_sympify(x) for x in arg]
      return ImmutableDenseMatrix(arg.rows, arg.cols, mat)
  
imports: from mpmath.matrices.matrices import _matrix
  from sympy.core import Basic, Dict, Tuple
  from sympy.core.numbers import Integer
  from sympy.core.cache import cacheit
  from sympy.core.sympify import _sympy_converter, _sympify
  from sympy.matrices.dense import DenseMatrix
  from sympy.matrices.expressions import MatrixExpr
  from sympy.matrices.matrixbase import MatrixBase
  from sympy.matrices.repmatrix import RepMatrix
  from sympy.matrices.sparse import SparseRepMatrix
  from sympy.multipledispatch import dispatch
label_desc: Use image node_id 2 for calling a global function with example usage: sympify_mpmath_matrix(arg) and returns: ImmutableDenseMatrix