Cannot get DDI number from "ISO11783_DDI" Representations created without the RepresentationManager.Instance

[JasonRoesbeke]

When a representation that has a DDI number as code and RepresentationCodeSourceEnum.ISO11783_DDI as CodeSource, DDI number is not retrieved.

Example of such a representation:

numericRepresentation = new AgGateway.ADAPT.ApplicationDataModel.Representations.NumericRepresentation()
{
    Code = "7",
    CodeSource = RepresentationCodeSourceEnum.ISO11783_DDI,
    Description = "Actual Mass Per Area Application Rate",
    LongDescription = @"Actual Application Rate specified as mass per area.",
    Dimension = UnitOfMeasureDimensionEnum.MassPerArea,
};

See line below where DDI numbers from only representations that are created with RepresentationManager.Instance.Representations are retrieved:

ISOv4Plugin/ISOv4Plugin/Representation/RepresentationMapper.cs

Line 62 in d4ce429

var matchingRepresentation = RepresentationManager.Instance.Representations[adaptRepresentation.Code];