The kind of object a metadata stream describes.
public enum PdfMetadataLocation
ISO 32000-2 §14.3.2, Table 348, and PDF 2.0 Application Note 003 Tables 1-5 and "Other locations".
kind:method, kind:property, kind:ctor. Press Esc to clear.AnnotationAn annotation (Application Note 003, other locations).DocumentThe whole document: the catalog's Metadata (Table 29).DocumentPartA document part (Table 409, PDF 2.0).EmbeddedFileAn embedded file stream (Table 44; Application Note 003, other locations).FontProgramAn embedded font program stream (FontFile, FontFile2, FontFile3), not the font or its descriptor (Application Note 003 Table 2).FormXObjectA form XObject (Table 93).IccProfileAn ICC profile stream of an ICCBased colour space (Table 65).ImageXObjectAn image XObject (Table 87).MarkedContentA marked-content property list in a Properties resource (§14.3.2).OptionalContentGroupAn optional content group (Application Note 003, other locations).OtherAny other object: found by a deep scan (§14.3.2 NOTE 2).PageA page (Table 31).ShadingA shading dictionary or stream, not a shading pattern (Application Note 003 Table 4).StructureElementA structure element (§14.7.2, Table 355; Application Note 003 Table 5).ThreadAn article thread (Table 162, PDF 2.0).ThreeDA 3D artwork stream (Application Note 003, other locations).TilingPatternA tiling pattern stream (Application Note 003 Table 3).Type3FontA Type 3 font dictionary (Application Note 003, other locations).