code: def test_string_rjust(self):
      self.check_func(lambda x: x.str.rjust(0))
      self.check_func(lambda x: x.str.rjust(10))
      self.check_func(lambda x: x.str.rjust(30, "x"))
  
imports: import pandas
  import numpy
  import re
  from pyspark import pandas
  from pyspark.testing.pandasutils import PandasOnSparkTestCase
  from pyspark.testing.sqlutils import SQLTestUtils
label_desc: Use image node_id 22 for calling the SeriesStringOpsAdvMixin obj's underlying member method code with example usage: obj.test_string_rjust() without return types