text: from typing import List
  
  import javalang
  
  from aibolit.types_decl import LineNumber
  from aibolit.utils.ast import AST
  
  
  class ClassicSetter:
  
      def __init__(self):
          pass
  
      def value(self, filename: str) -> List[LineNumber]:
          lst: List[LineNumber] = []
          tree = AST(filename).value().filter(javalang.tree.MethodDeclaration)
          for path, node in tree:
              if (node.return_type is None) and ('set' in node.name[:3]):
                  if (isinstance(node.body, list)) and len(node.body) < 2:
                      for statement in node.body:
                          if isinstance(statement, javalang.tree.StatementExpression):
                              if isinstance(statement.expression, javalang.tree.Assignment):
                                  expression = statement.expression.expressionl
                                  if isinstance(expression, javalang.tree.This):
                                      if statement.expression.type == '=':
                                          if expression.selectors[0].member.lower() == node.name.lower()[3:]:
                                              lst.append(node._position.line)
                                      else:
                                          break
                                  else:
                                      break
                              else:
                                  break
          return lst
  