funcNotCalled3() should be declared external:
	- ContractWithFunctionNotCalled.funcNotCalled3() (tests/external_function.sol#13-15)
funcNotCalled2() should be declared external:
	- ContractWithFunctionNotCalled.funcNotCalled2() (tests/external_function.sol#17-19)
funcNotCalled() should be declared external:
	- ContractWithFunctionNotCalled.funcNotCalled() (tests/external_function.sol#21-23)
funcNotCalled() should be declared external:
	- ContractWithFunctionNotCalled2.funcNotCalled() (tests/external_function.sol#32-39)
parameter_read_ok_for_external(uint256) should be declared external:
	- FunctionParameterWrite.parameter_read_ok_for_external(uint256) (tests/external_function.sol#74-76)
Reference: https://github.com/crytic/slither/wiki/Detector-Documentation#public-function-that-could-be-declared-as-external
tests/external_function.sol analyzed (6 contracts with 1 detectors), 5 result(s) found
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