public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append("signature:=").append(new String(getSignature(), UTF_8)).append(", ");
        sb.append("free space:=").append(getFreeSpace()).append(System.getProperty("line.separator"));
        return sb.toString();
    }
Returns textual representation of the pmgi header
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-microsoft-module/src/main/java/org/apache/tika/parser/microsoft/chm/ChmPmgiHeader.java