AIF Custom service atributes in AX

SysEntryPointAttribute:This is a mandatory attribute in methods that
are exposed as a service operation. It indicates
that the method is a service operation. Not
using this attribute will result in a service
group deployment failure.
An optional parameter specifies whether the
AOSAutorization setting on the tables will
be checked when this method is executed on
the server.
Ex:
[SysEntryPointAttribute(true)]
private void GetRecord(Str _titleId)
{
}
DataContractAttribute:Defines that the attributed class is used as a
data contract for a service.
Ex:
[DataContractAttribute]
private void GetRecord(Str _titleId)
{
}
DataMemberAttribute:Indicates that a parameter method is a data
member in a data contract for a service.
Ex:
[DataMemberAttribute]
private void GetRecord(Str _titleId)
{
}

AifCollectionTypeAttribute:This attributes specifies the type that is used
in a collection. It contains the name of the
parameter that is targeted and the types of the
objects that are contained in the collection.
Ex:
[AifCollectionTypeAttribute]
private void GetRecord(Str _titleId)
{
}