Propose a similar structure for the LicenseInformationClass toSPDX

[goneall]

Propose a similar structure for the LicenseInformationClass to what SPDX uses today.
Remove the type and use separate attribute for the different types of licenses, all of which have cardinality [0..1] declaredLicense, concludedLicense, distributedLicense. Each of these attributes would contain a valid SPDX license expression.
Add a licenseComment to capture the “other”

[CASTResearchLabs]

this was only an attempt to have a lean model instead of a fat class with X fields

[goneall]

From a tooling point of view, I suggest it would be easier to deal with multiple optional parameters than to have to parse the type field.