class_docstr: ExecProperty Placeholder represents an execution property.
  
  Prefer to use exec_property(...) to create exec property placeholders.
class_docstr_tok: ["ExecProperty","Placeholder","represents","an","execution","property",".","Prefer","to","use","exec_property","(","...",")","to","create","exec","property","placeholders","."]
code: def encode(
      self, component_spec: Optional[Any] = None
  ) -> placeholder_pb2.PlaceholderExpression:
      result = placeholder_pb2.PlaceholderExpression()
      result.placeholder.type = (
          placeholder_pb2.Placeholder.Type.EXEC_PROPERTY
      )
      result.placeholder.key = self._key
      return result
  
imports: from __future__ import annotations
  import typing
  from typing import Any, Literal, Optional, Union
  from tfx.dsl.placeholder import placeholder_base
  from tfx.proto.orchestration import placeholder_pb2
  from google.protobuf import message
label_desc: Use image node_id 3 for calling the ExecPropertyPlaceholder obj's underlying member method code with example usage: obj.encode(component_spec) and returns: result