Trying to install OpenFoam in Ubuntu WSL using fish shell [closed]

So I am trying to install OpenFoam12 in Ubuntu and I am using fish. However, the installation instrucctions mentions:

1. Open the .bashrc file in the user’s home directory in an editor, e.g. by typing in a terminal window (note the dot):

   gedit ~/.bashrc

2. At the bottom of that file, add the following line (see Note 1 below) and save the file (note the leading dot):

   . /opt/openfoam12/etc/bashrc

However, I am using fish as shell. How to make it compatible? What should be the fish command equivalent to ". /opt/openfoam12/etc/bashrc" to put it in config.fish?