ExpressionStatement oldVariableAssignment = new ExpressionStatement(
new DeclarationExpression(oldVariable,
Token.newSymbol(Types.ASSIGN, -1, -1),
methodCall));
methodBlockStatement.addStatement(oldVariableAssignment);
oldVariablesMap.addMapEntryExpression(new MapEntryExpression(new ConstantExpression(oldVariable.getName().substring("$old$".length())), oldVariable));
} else if (ClassHelper.isPrimitiveType(fieldType)
|| ClassHelper.isNumberType(fieldType)
|| fieldType.getName().startsWith("java.math")