conversionErrorAt

A CONVERSION_ERROR naming where in the container the value was.

A container's accessors are the leaves of the read chain, so a failure in one is where a path ends: the layers above append their own segment as it unwinds, and this is what puts the last one on. It matters most inside a hand-written converter, where the chain is what invoked you and payload -> amount is a great deal more use than payload.

Only a value that is there gets a segment. An index out of bounds or a name the container does not have is not a location, and saying it twice - once in the message, once as a path - would read as though the driver had found something there.

Parameters