in src/Microsoft.NET.Sdk.Functions.Generator/ParameterInfoExtensions.cs [15:20]
public static bool IsWebJobSdkTriggerParameter(this ParameterDefinition parameterInfo)
{
return parameterInfo
.CustomAttributes
.Any(a => a.IsWebJobsAttribute() && a.ToAttributeFriendlyName().IndexOf("Trigger") > -1);
}