How can I use my custom rule which is similar to defined rule?

I want to add a new Rule to this plugin. The rule is based on the Methods which should be named in lowerCamelCase style. I noticed that it is already defined in the rule. However, the rule's implementation is different than the defined rule.

How can I suppress the defined the rule and use my own custom rule?

Can you help me which way I should use with providing the code example if possible?

The issue names no files or tests. Start by locating the existing lowerCamelCase rule and the plugin's custom-rule configuration path, then determine how an overlapping rule can be suppressed or replaced. Done means the supported approach is documented with a working code example.

Written by the indexing model from the issue text.