class_docstr: A collection of protobufs dynamically constructed by descriptor protos.
class_docstr_tok: ["A","collection","of","protobufs","dynamically","constructed","by","descriptor","protos","."]
docstr: Loads the named field descriptor from the pool.
  
  Args:
    full_name (str): The full name of the field descriptor to load.
  
  Returns:
    FieldDescriptor: The field descriptor for the named field.
  
  Raises:
    KeyError: if the field cannot be found in the pool.
code: def FindFieldByName(self, full_name):
      """Loads the named field descriptor from the pool.
  
      Args:
        full_name (str): The full name of the field descriptor to load.
  
      Returns:
        FieldDescriptor: The field descriptor for the named field.
  
      Raises:
        KeyError: if the field cannot be found in the pool.
      """
      full_name = _NormalizeFullyQualifiedName(full_name)
      message_name, _, field_name = full_name.rpartition(".")
      message_descriptor = self.FindMessageTypeByName(message_name)
      return message_descriptor.fields_by_name[field_name]
  
imports: import collections
  import warnings
  from google.protobuf import descriptor
  from google.protobuf import descriptor_database
  from google.protobuf import text_encoding
label_desc: Use image node_id 21 for calling the DescriptorPool obj's underlying member method code with example usage: obj.FindFieldByName(full_name) and returns: message_descriptor