Returns one of the named matroids below.
The matroids provided in this function (together with the infinite families given by the functions affineGeometry, projectiveGeometry, binarySpike, spike, swirl, wheel, whirl, thetaMatroid, uniformMatroid) includes all "interesting matroids" listed in Oxley, p. 639  664 (except for the general Dowling geometry).
Many of these matroids are interesting for their (non)representability or duality properties:








Notice that the ground set is a subset of $\{0, ..., n1\}$ rather than $\{1, ..., n\}$.
The object specificMatroid is a method function.