a0d929ca_WSRP_v2_0_Specification__Statement_text
[#] CS121 [Section] 7.4 [Statement text] 
A Consumer MUST NOT reference any of the supplied portletHandles after successfully invoking destroyPortlets and MAY reclaim resources related to the supplied portletHandles (e.g. portletState).
WSRP v2.0 Specification
Statement text