Configures an Expression for the search domain. Used to create new expressions and modify existing ones. If the expression exists, the new configuration replaces the old one. For more information, see Configuring Expressions in the Amazon CloudSearch Developer Guide .
 Declaration Syntax
 Declaration Syntax| C# | 
DefineExpressionResponse DefineExpression( DefineExpressionRequest defineExpressionRequest )
 Parameters
 Parameters- defineExpressionRequest (DefineExpressionRequest)
- Container for the necessary parameters to execute the DefineExpression service method on AmazonCloudSearch.
 Return Value
 Return ValueThe response from the DefineExpression service method, as returned by AmazonCloudSearch.
 Exceptions
 Exceptions