code: def _get_x_matrix(x, to_str):
      if to_str:
          x = _to_string_matrix(x[0])
      else:
          x = x[0]
      return x
  
imports: from hypothesis import assume, strategies
  import numpy
  import sys
  import ivy
  import ivy_tests.test_ivy.helpers
  from ivy_tests.test_ivy.helpers import handle_frontend_method, handle_frontend_test
  import ivy.functional.frontends.numpy
label_desc: Use image node_id 1 for calling a global function with example usage: _get_x_matrix(x, to_str) and returns: x