Why convert a collection of objects to an object with numeric keys?

[baig]

RAML parser parses this structure:

resourceTypes:
    - readOnlyCollection:
          description: Collection of available <<resourcePathName>> in Jukebox.
          get:
          ⋮
    - collection:
          description: Collection of available <<resourcePathName>> in Jukebox.
          get:
          ⋮

to this:

{
    resourceTypes:  {
        '0': { readOnlyCollection: [Object] },
        '1': { collection: [Object] },
        '2': { 'collection-item': [Object] }
    }
}

instead of this:

{
    resourceTypes:  [
        { readOnlyCollection: [Object] },
        { collection: [Object] },
        { 'collection-item': [Object] }
    ]
}

Why?

[baig]

My bad. This is not the case. Indeed RAML parser does convert it to a collection of objects. Ignore this please. I apologize for any inconvenience.