Check class of instance that calls `getSlidingPercent()`

[imhoffd]

Although less likely to cause problems than an instance that calls create(), we could probably do some more syntax checks like we do for ion-action-sheet-method-create-parameters-renamed and ion-alert-method-create-parameters-renamed.

It appears as though we're just checking for any function call by the name of getSlidingPercent():

v4-migration-tslint/src/ionItemOptionMethodGetSlidingPercentRenamedRule.ts

Lines 9 to 12 in 2617d26

	if (expression.name && expression.name.text === 'getSlidingPercent') {
	const replacement = new Lint.Replacement(expression.name.getStart(), expression.name.getWidth(), 'getSlidingRatio');
	this.addFailure(this.createFailure(expression.name.getStart(), expression.name.getWidth(), ruleMessage, replacement));
	}

[cwoolum]

I'm running into the same problem on #40. It doesn't seem possible to get the type of an IdentityNode unless the developer would have explicitly defined the type. In #40, I chose not to add a fixer for the present part so the user could decide on a case-by-case basis.