class_docstr: A collection of protobufs dynamically constructed by descriptor protos.
class_docstr_tok: ["A","collection","of","protobufs","dynamically","constructed","by","descriptor","protos","."]
docstr: Gets the FileDescriptor for the file containing the specified symbol.
  
  Args:
    symbol (str): The name of the symbol to search for.
  
  Returns:
    FileDescriptor: Descriptor for the file that contains the specified
    symbol.
  
  Raises:
    KeyError: if the file cannot be found in the pool.
code: def FindFileContainingSymbol(self, symbol):
      """Gets the FileDescriptor for the file containing the specified symbol.
  
      Args:
        symbol (str): The name of the symbol to search for.
  
      Returns:
        FileDescriptor: Descriptor for the file that contains the specified
        symbol.
  
      Raises:
        KeyError: if the file cannot be found in the pool.
      """
  
      symbol = _NormalizeFullyQualifiedName(symbol)
      try:
          return self._InternalFindFileContainingSymbol(symbol)
      except KeyError:
          pass
  
      try:
          # Try fallback database. Build and find again if possible.
          self._FindFileContainingSymbolInDb(symbol)
          return self._InternalFindFileContainingSymbol(symbol)
      except KeyError:
          raise KeyError("Cannot find a file containing %s" % symbol)
  
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 17 for calling the DescriptorPool obj's underlying member method code with example usage: obj.FindFileContainingSymbol(symbol) and returns: self, self