public Optional<OperationContextParamsTrait> getOperationContextParams(Shape operation) {
        return operation.getTrait(OperationContextParamsTrait.class);
    }
Gets the operation context parameter names and their {@link OperationContextParamDefinition} for the given
operation.

@param operation The operation shape.
@return The mapping of context parameter names to the JMESPath expression to bind to input elements.
smithy-rules-engine/src/main/java/software/amazon/smithy/rulesengine/traits/ContextIndex.java