code: def get_file(profile, branch, file_path):
      
      branch_sha = get_branch_sha(profile, branch)
      tree = get_files_in_branch(profile, branch_sha)
      match = None
      for item in tree:
          if item.get("path") == file_path:
              match = item
              break
      file_sha = match.get("sha")
      blob = blobs.get_blob(profile, file_sha)
      content = blob.get("content")
      decoded_content = b64decode(content)
      return decoded_content.decode("utf-8")
docs: Get a file from a branch.
  
      Args:
  
          profile
              A profile generated from ``simplygithub.authentication.profile``.
              Such profiles tell this module (i) the ``repo`` to connect to,
              and (ii) the ``token`` to connect with.
  
          branch
              The name of a branch.
  
          file_path
              The path of the file to fetch.
  
      Returns:
          The (UTF-8 encoded) content of the file, as a string.