true
if the reference was removed;false
otherwise.
DavSession
. If no more references are present, this session may be discarded.
@param reference to be removed.
null
is parsed as reference, that the call is ignored.
@param field the field
@param reference the string representation of the reference. Note thatthe value will be interpreted as a "reference" so there might apply some rules about the format of the string. Regardless of the implementation any valid URI and URL need to be accepted as a valid reference value
@throws NullPointerException if null
is parsed as field
@throws IllegalArgumentException if an empty string is parsed as field
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