paper-xlsxAPI referencedescriptors.sequenceopenpyxl.descriptors.sequencepaper-xlsx 0.2.1 API referenceCopy MarkdownOpen ClassMultiSequenceMultiSequencePartNestedSequenceSequenceUniqueSequenceValueSequenceNestedValuepaper-xlsx 0.2.1 API referenceMultiSequencepaper-xlsx 0.2.1 API reference