How to get parameter type in Roslyn parser?

Question

.NET

Hello everyone
Could you help me, I need to write a Roslyn Analyzer so that when passing a parameter to a function I can check its type and make corrections?
He swears at this, says that "parameters are not supported in RegisterSymbolAction"

public override void Initialize(AnalysisContext context)
{
  context.RegisterSymbolAction(AnalyzeSymbol, SymbolKind.Parameter);
}