code: public String getColumnNameForProperty(final String propertyName)
     {
       return Optional.ofNullable(propertyToField.get(propertyName))
                      .map(fcInfo -> fcInfo.getDelimitedColumnName())
                      .orElse(null);
     }
docs: Get the delimited column name for the specified property name, or {@code null} if
  no such property exists.
  
  CLARIFY Must be public?
  
  @return the delimited column name or {@code null}