public SingleValueRowMapper(RoleMappedSchema schema, SchemaBindablePredictorWrapperBase parent, Schema outputSchema)
{
Contracts.AssertValue(schema);
Contracts.AssertValue(parent);
Contracts.Assert(schema.Feature.HasValue);
Contracts.Assert(outputSchema.Count == 1);
_parent = parent;
InputRoleMappedSchema = schema;
OutputSchema = outputSchema;
}