public MustacheEngineBuilder addValueConverter(ValueConverter converter) {
        checkArgumentNotNull(converter);
        checkNotBuilt();
        this.valueConverters.add(converter);
        return this;
    }
public MustacheEngineBuilder addValueConverter(ValueConverter converter) {
        checkArgumentNotNull(converter);
        checkNotBuilt();
        this.valueConverters.add(converter);
        return this;
    }
public MustacheEngineBuilder addValueConverter ( ValueConverter converter ) { checkArgumentNotNull ( converter ) ; checkNotBuilt ( ) ; this . valueConverters . add ( converter ) ; return this ; }
Add a value converter.

@param converter
@return self
Add a value converter .