String (PsiLiteralExpression firstArgument) { final String text = LiteralFormatUtil.removeUnderscores(firstArgument.getText()); final char c = text.charAt(text.length() - 1); return c == 'd' || c == 'D' || c == 'f' || c == 'F' ? text.substring(0, text.length() - 1) : text; }