public static void removeVariable(GrVariable variable) {
    final GrVariableDeclaration varDecl = (GrVariableDeclaration) variable.getParent();
    final List<GrVariable> variables = Arrays.asList(varDecl.getVariables());
    if (!variables.contains(variable)) {
      throw new IllegalArgumentException();
    }

    final PsiElement parent = varDecl.getParent();
    final ASTNode owner = parent.getNode();
    if (variables.size() == 1 && owner != null) {
      PsiElement next = varDecl.getNextSibling();

      // remove redundant semicolons
      while (next != null && next.getNode() != null && next.getNode().getElementType() == GroovyTokenTypes.mSEMI) {
        PsiElement tmpNext = next.getNextSibling();
        next.delete();
        next = tmpNext;
      }

      removeNewLineAfter(varDecl);
      varDecl.delete();
      return;
    }
    variable.delete();
  }
public static void removeVariable(GrVariable variable)