Metode disponibile: Array
(
    [0] => __construct
    [1] => createInvoice
    [2] => createProforma
    [3] => createNotice
    [4] => get
    [5] => list
    [6] => cancel
    [7] => delete
    [8] => collect
    [9] => nomenclature
    [10] => setCif
    [11] => buildRequest
    [12] => createRequest
    [13] => getAccessToken
)