What is the `masking_ratio`?

[theotheo]

Hello! Could you help me figure out this part of code? Here is created masking_ratio variable, but it not used anywhere else. What was the intended purpose of these lines? Maybe a different model was meant originally here?

https://github.com/dali92002/DocEnTR/blob/2e09b9e4e904802fb83f6b8e8176bdca150c53f9/models/binae.py#L21-L22