Return type for block get operation.
block:Block
Returned data block.
errorCode:String
Error code. Can be one of the following:
ok - Operation successful.
ok
lockTimeout - Data block already locked.
lockTimeout
sameVersion - Data block has the same version. block is null in this case.
sameVersion
block
notFound - No data block found with this ID in database. block is null in this case.
notFound