PropertyExpressionProtocol
public protocol PropertyExpressionProtocol: ExpressionProtocolProperty expression.
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                  Specifies an alias name of the data source to query the data from. DeclarationSwift func from(_ alias: String?) -> ExpressionProtocolParametersaliasThe alias name of the data source. Return ValueThe property expression with the given data source alias name. 
 PropertyExpressionProtocol Protocol Reference
        PropertyExpressionProtocol Protocol Reference