| AppendPDFStream(Stream) | Appends a PDF stream given by the method parameter to the merged PDF document |
| AppendPDFStream(Stream, Int32) | Appends pages from the specified source document starting from zero based page index in the source document. |
| AppendPDFStream(Stream, Int32, Int32) | Appends at most length pages from the specified source document starting from zero based index startIndex in the source document. |
| AppendPDFStream(Stream, String, Int32, Int32) | Appends at most length pages from the specified password protected source document starting from zero based index startIndex in the source document. |