code: def parse_content(self, content):
          
          data = {}
          data = split_kv_pairs(content, use_partition=False)
  
          """Remove empty key"""
          self.data = dict((k, v) for k, v in data.items() if not v == '')
docs: Sample Input::
  
              TimeoutStartUSec=1min 30s
              LimitNOFILE=65536
              LimitMEMLOCK=
              LimitLOCKS=18446744073709551615
  
          Sample Output::
  
              {"LimitNOFILE"     : "65536",
              "TimeoutStartUSec" : "1min 30s",
              "LimitLOCKS"       : "18446744073709551615"}
  
          In CMD's output, empty properties are suppressed by default.
          We will also suppressed empty properties in return data.