public Call registerOutParameter(String name, int sqlType, CallableStatementMapper mapper) {
        getBinding().addNamed(name, new OutParamArgument(sqlType, mapper, name));
        return this;
    }
Register a named output parameter.
@param name the parameter name
@param sqlType an SQL type constant as defined by {@link java.sql.Types} or by the JDBC vendor.
@param mapper a mapper which converts the {@link CallableStatement} to a desired output type.
@return self
core/src/main/java/org/jdbi/v3/core/statement/Call.java