例えば、System.Text.StringBuilderなら、PowerShellで、
$sb=new-object system.text.stringbuilder
get-member -inputobject $sb | format-list
その結果、
TypeName : System.Text.StringBuilder
Name : Append
MemberType : Method
Definition : System.Text.StringBuilder Append(Char value, Int32 repeatCount), S
ystem.Text.StringBuilder Append(Char[] value, Int32 startIndex, In
t32 charCount), System.Text.StringBuilder Append(String value), Sy
stem.Text.StringBuilder Append(String value, Int32 startIndex, Int
32 count), System.Text.StringBuilder Append(Boolean value), System
.Text.StringBuilder Append(SByte value), System.Text.StringBuilder
Append(Byte value), System.Text.StringBuilder Append(Char value),
System.Text.StringBuilder Append(Int16 value), System.Text.String
Builder Append(Int32 value), System.Text.StringBuilder Append(Int6
4 value), System.Text.StringBuilder Append(Single value), System.T
ext.StringBuilder Append(Double value), System.Text.StringBuilder
Append(Decimal value), System.Text.StringBuilder Append(UInt16 val
ue), System.Text.StringBuilder Append(UInt32 value), System.Text.S
tringBuilder Append(UInt64 value), System.Text.StringBuilder Appen
d(Object value), System.Text.StringBuilder Append(Char[] value)
この並びの順にサフィックスが付くようです。