class_docstr: Converts string into MongoQuery
code: def process_func_name(self, node):
      previous_call = None
      if isinstance(node, py_ast.Attribute):
          attribute = node
          # multilevel attribute
  
          obj_name = []
          while isinstance(attribute, py_ast.Attribute):
              obj_name.insert(0, attribute.attr)
              attribute = attribute.value
  
          if isinstance(attribute, py_ast.Name):
              obj_name.insert(0, attribute.id)
  
          if isinstance(attribute, py_ast.Call):
              # is pipeline
              previous_call = self.process(attribute)
  
          return previous_call, obj_name
  
imports: import ast
  import dateutil.parser
  from bson import ObjectId
  from .mongodb_query import MongoQuery
label_desc: Use image node_id 3 for calling the MongodbParser obj's underlying member method code with example usage: obj.process_func_name(node) and returns: previous_call,  obj_name