code: def _match_pragma(stmt, key):
      """Internal helper to match stmt to pragma stmt.
  
      Parameters
      ----------
      stmt : Stmt
          The AttrStmt
  
      key : str
          The pragma key
      """
      return (stmt.attr_key == "pragma_" + key) or (
          stmt.attr_key == "pragma_scope" and stmt.value.value == key
      )
  
file_path: tvm/vta/python/vta/transform.py
imports: import tvm
  from tvm import te
  from tvm.topi import utils
  from .environment import get_env
label_desc: Use image node_id 1 for calling a global function with example usage: _match_pragma(stmt, key) and returns: unknown