public boolean isSetKCMS() {
        return setKCMS;
    }
The maximum amount of memory to use when loading a pdf into a PDDocument. Additional
buffering is done using a temp file. The default is 512MB.

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