HHRy/prawn-graph

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Unused method argument - block. If it's necessary, use _ or _block as an argument name to indicate that it won't be used.
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        def initialize(series, prawn, options = {}, &block)

This cop checks for unused method arguments.

Example:

# bad

def some_method(used, unused, _unused_but_allowed)
  puts used
end

Example:

# good

def some_method(used, _unused, _unused_but_allowed)
  puts used
end
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