public void setExtractAcroFormContent(boolean extractAcroFormContent) {
        this.extractAcroFormContent = extractAcroFormContent;
        userConfigured.add("extractAcroFormContent");
    }
If true (the default), extract content from AcroForms
at the end of the document.  If an XFA is found,
try to process that, otherwise, process the AcroForm.

@param extractAcroFormContent
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-pdf-module/src/main/java/org/apache/tika/parser/pdf/PDFParserConfig.java