PdfMetadata
data class PdfMetadata(val title: String?, val author: String?, val subject: String?, val keywords: String?, val creator: String?, val producer: String?, val creationDate: String?, val modificationDate: String?, val additional: Map<String, String> = emptyMap())
Document information dictionary values.
PDF date values are intentionally left unparsed because malformed and partially specified PDF date strings are common.