class_docstr: Abstract class defining a entrypoint based plugin registration.
  
  This class allows the registration of a function or class to provide an implementation
  for a given key/name. Implementations declared though the entrypoints can be automatically
  registered through the `register_entrypoints` method.
class_docstr_tok: ["Abstract","class","defining","a","entrypoint","based","plugin","registration",".","This","class","allows","the","registration","of","a","function","or","class","to","provide","an","implementation","for","a","given","key\/name",".","Implementations","declared","though","the","entrypoints","can","be","automatically","registered","through","the","`","register_entrypoints","`","method","."]
docstr: Returns bool representing whether the "register_entrypoints" has run or not. This
  doesn't return True if `register` method is called outside of `register_entrypoints`
  to register plugins
docstr_tok: ["Returns","bool","representing","whether","the","``","register_entrypoints","''","has","run","or","not",".","This","does","n't","return","True","if","`","register","`","method","is","called","outside","of","`","register_entrypoints","`","to","register","plugins"]
code: def has_registered(self):
      """
      Returns bool representing whether the "register_entrypoints" has run or not. This
      doesn't return True if `register` method is called outside of `register_entrypoints`
      to register plugins
      """
      return self._has_registered
  
file_path: mlflow/mlflow/deployments/plugin_manager.py
imports: import abc
  import inspect
  import entrypoints
  from mlflow.deployments.base import BaseDeploymentClient
  from mlflow.deployments.utils import parse_target_uri
  from mlflow.exceptions import MlflowException
  from mlflow.protos.databricks_pb2 import INTERNAL_ERROR, RESOURCE_DOES_NOT_EXIST
  from mlflow.utils.annotations import developer_stable
label_desc: Use image node_id 4 for calling the PluginManager obj's underlying member method code with example usage: obj.has_registered() and returns: self