This defines a new complex SOAP datatype (usualy array of structure) named @name@.   


The schema_string string represents definition as complexType element from XML Schema.
The only complexContent, all and sequence elements can be used within the complexType. This means that 
optional elements in the defined datattype are not supported as a variant of the SOAP paramter datatype.
If the schema descritopns contains an unsuported element , the SQL error will be signalled and error message 
will explain what element is wrong.
