docs: def datadir_init(name,
          auth='password',
          user=None,
          password=None,
          encoding='UTF8',
          locale=None,
          waldir=None,
          checksums=False,
          runas=None):
      '''
      .. versionadded:: 2016.3.0
  
      Initializes a postgres data directory
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' postgres.datadir_init '/var/lib/pgsql/data'
  
      name
          The name of the directory to initialize
  
      auth
          The default authentication method for local connections
  
      password
          The password to set for the postgres user
  
      user
          The database superuser name
  
      encoding
          The default encoding for new databases
  
      locale
          The default locale for new databases
  
      waldir
          The transaction log (WAL) directory (default is to keep WAL
          inside the data directory)
  
          .. versionadded:: 2019.2.0
  
      checksums
          If True, the cluster will be created with data page checksums.
  
          .. note::  Data page checksums are supported since PostgreSQL 9.3.
  
          .. versionadded:: 2019.2.0
  
      runas
          The system user the operation should be performed on behalf of
  
      '''
      if datadir_exists(name):
          log.info('%s already exists', name)
          return False
  
      ret = _run_initdb(
          name,
          auth=auth,
          user=user,
          password=password,
          encoding=encoding,
          locale=locale,
          runas=runas)
      return ret['retcode'] == 0