code: def check_basic_block_normal_form(expr):
      """Check whether an expression is in the basic block form
  
      Parameters
      ----------
      expr : tvm.relay.Expr
          The input expression
  
      Returns
      -------
      result : bool
          Whether the expression is in the basic block form.
      """
      return _ffi_api.check_basic_block_normal_form(expr)
  
imports: from ...ir import IRModule
  from ...relay import transform, build_module
  from ...runtime.ndarray import cpu
  from .None import _ffi_api
  from .feature import Feature
label_desc: Use image node_id 5 for calling a global function with example usage: check_basic_block_normal_form(expr) and returns: _ffi_api