SPINEL_PROP_MESHCOP_JOINER_DISCERNER value

Thread Joiner Discerner Format `CX` - Read-write Required capability: SPINEL_CAP_THREAD_JOINER This property represents a Joiner Discerner. The Joiner Discerner is used to calculate the Joiner ID used during commissioning/joining process. By default (when a discerner is not provided or cleared), Joiner ID is derived as first 64 bits of the result of computing SHA-256 over factory-assigned IEEE EUI-64. Note that this is the main behavior expected by Thread specification. Format: 'C' : The Joiner Discerner bit length (number of bits). `X` : The Joiner Discerner value (64-bit unsigned) - Only present/applicable when length is non-zero. When writing to this property, the length can be set to zero to clear any previously set Joiner Discerner value. When reading this property if there is no currently set Joiner Discerner, zero is returned as the length (with no value field).