update contentType to be optional#66

Frosty2500 wants to merge 2 commits intoupdate/Metamodel_V3.1.2rwth-iat/basyx-python-sdk:update/Metamodel_V3.1.2from

update/Metamodel_V3.1.2_optional_contentTyperwth-iat/basyx-python-sdk:update/Metamodel_V3.1.2_optional_contentTypeCopy head branch name to clipboard