src/Shared/EntityFramework/Core/Objects/ObjectParameterCollection.cs
/// <summary>
/// Checks for the existence of a specified <see cref="T:System.Data.Entity.Core.Objects.ObjectParameter" /> in the collection by reference.
/// </summary>
/// <returns>Returns true if the parameter object was found in the collection; otherwise, false.  </returns>
/// <param name="item">
/// The <see cref="T:System.Data.Entity.Core.Objects.ObjectParameter" /> to find in the collection.
/// </param>
/// <exception cref="T:System.ArgumentNullException">The  parameter  argument is null.</exception>
Checks for the existence of a specified  in the collection by reference.
Checks for the existence of a specified in the collection by reference .
public bool Contains(ObjectParameter item)
        {
            Check.NotNull(item, "item");
            return _parameters.Contains(item);
        }
public bool Contains ( ObjectParameter item ) { Check . NotNull ( item , " " ) ; return _parameters . Contains ( item ) ; }
Checks for the existence of a specified  in the collection by reference.
Checks for the existence of a specified in the collection by reference .
Returns true if the parameter object was found in the collection; otherwise, false.
Returns true if the parameter object was found in the collection ; otherwise false .
The  parameter  argument is null.
The parameter argument is null .
item
ObjectParameter
The  to find in the collection.
The to find in the collection .