Where do i find the API meathods for Grav

Hi guys brand new to grav , i saw the below method in the taxonomy documentation:

{% for post in taxonomy.findTaxonomy({'tag':['animal','cat'],'author':'jdoe'}) %}

where do i find all of these meathods such as findTaxonomy ? and all the options i can pass to it ?

You can find it in the documentation --> https://learn.getgrav.org/api#class-gravcommontaxonomy

Damn ! that was fast. Thanks.