Severity: AnalysisErrorSeverity.WARNING
Maturity: stable
Since 1.0.0
PREFER to use a value for props.key that is guaranteed to be unique.
While hashCode may seem like it is "unique enough", hashCode values by design can collide with each other,
and may collide often based on how they are implemented.
Try using other information, such as a unique ID field on the object or an index, to construct the key instead.