IHPDFTextEntityDetector Interface

function Detect(
    const Request: THPDFTextEntityDetectionRequest;
    out Results: THPDFTextEntityResults;
    out Diagnostic: AnsiString): boolean;

GetName supplies a diagnostic engine name while Detect returns zero-based UTF-16 spans, categories, and confidence values

The detector must honor MaxResults and cancellation, must not retain the request text or token, and must return False with a diagnostic for an operational failure

HotPDF validates every span and maps accepted ranges through extracted character quadrilaterals into page-space findings