2.2.6 x-irm-notowner Header
The x-irm-notowner header is reserved and the protocol client MUST ignore it.<6>
This x-irm-notowner header is defined in ABNF syntax as follows.
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irm-notowner-header = "x-irm-notowner" ":" irm-information-value irm-information-value = 1*TEXT
The irm-information-value element is a text string.