private CharSequence generateFileHeader(
        final String packageName,
        final Set<String> importedTypesPackages,
        final String fqBuffer)
    {
        return "/* Generated SBE (Simple Binary Encoding) message codec. */\n" +
            "package " + packageName + ";\n\n" +
            "import " + fqBuffer + ";\n" +
            interfaceImportLine() +
            generateImportStatements(importedTypesPackages, packageName);
    }
\n")
            .append("     * Lookup the enum value representing the value.\n")
            .append("     *\n")
            .append("     * @param value encoded to be looked up.\n")
            .append("     * @return the enum value representing the value.\n")
            .append("
sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/java/JavaGenerator.java