@Override
    public int hashCode() {
        return Objects.hash(transformationStages);
    }
Represents a chain of {@link Transformation}s to be applied to a {@link ConnectRecord} serially.
@param <T> The type of record included in the {@link ProcessingContext} associated with each record
@param <R> The type of record (must be an implementation of {@link ConnectRecord})
connect/runtime/src/main/java/org/apache/kafka/connect/runtime/TransformationChain.java