added files via upload

Tweaks/FLEX/Editing/FLEXFieldEditorViewController.h

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+//
+//  FLEXFieldEditorViewController.h
+//  FLEX
+//
+//  Created by Tanner on 11/22/18.
+//  Copyright © 2020 FLEX Team. All rights reserved.
+//
+
+#import "FLEXVariableEditorViewController.h"
+#import "FLEXProperty.h"
+#import "FLEXIvar.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface FLEXFieldEditorViewController : FLEXVariableEditorViewController
+
+/// @return nil if the property is readonly or if the type is unsupported
++ (nullable instancetype)target:(id)target property:(FLEXProperty *)property commitHandler:(void(^_Nullable)(void))onCommit;
+/// @return nil if the ivar type is unsupported
++ (nullable instancetype)target:(id)target ivar:(FLEXIvar *)ivar commitHandler:(void(^_Nullable)(void))onCommit;
+
+/// Subclasses can change the button title via the \c title property
+@property (nonatomic, readonly) UIBarButtonItem *getterButton;
+
+- (void)getterButtonPressed:(id)sender;
+
+@end
+
+NS_ASSUME_NONNULL_END