@brief Retrieve configuration value for property \p name.
If \p dest is non-NULL the value will be written to \p dest with at
most \p dest_size.
\p *dest_size is updated to the full length of the value, thus if
\p *dest_size initially is smaller than the full length the application
may reallocate \p dest to fit the returned \p *dest_size and try again.
If \p dest is NULL only the full length of the value is returned.
Returns \p RD_KAFKA_CONF_OK if the property name matched, else
\p RD_KAFKA_CONF_UNKNOWN.
@brief Retrieve configuration value for property \p name.
If \p dest is non-NULL the value will be written to \p dest with at most \p dest_size.
\p *dest_size is updated to the full length of the value, thus if \p *dest_size initially is smaller than the full length the application may reallocate \p dest to fit the returned \p *dest_size and try again.
If \p dest is NULL only the full length of the value is returned.
Returns \p RD_KAFKA_CONF_OK if the property name matched, else \p RD_KAFKA_CONF_UNKNOWN.