class Collection < ArvadosBase
+ MD5_EMPTY = 'd41d8cd98f00b204e9800998ecf8427e'
+
+ # Return true if the given string is the locator of a zero-length blob
+ def self.is_empty_blob_locator? locator
+ !!locator.to_s.match("^#{MD5_EMPTY}(\\+.*)?\$")
+ end
+
def total_bytes
if files
tot = 0