Method put

fop-core/src/main/java/org/apache/fop/pdf/PDFInfo.java:314–323

Adds a custom property to this Info dictionary.

(String key, String value)

     * Adds a custom property to this Info dictionary.
     */
    public void put(String key, String value) {
        StandardKey standardKey = StandardKey.get(key);
        if (standardKey != null) {
            throw new IllegalArgumentException(key + " is a reserved keyword");
        }
        if (customProperties == null) {
            customProperties = new LinkedHashMap<PDFName, String>();
        }
        customProperties.put(new PDFName(key), value);
    }

}