public static FieldConfigBase::createFromDataType($type)

Array of constraint options keyed by constraint plugin ID. Type:

The field description. A human-readable description for the field when used with this bundle. For example, the description will be the help

public FieldConfigBase::addConstraint($constraint_name, $options =

The data definition of a field item. Type:

public FieldConfigBase::getItemDefinition()

public FieldConfigBase::onDependencyRemoval(array $dependencies)

public FieldConfigBase::getDescription()

public FieldConfigBase::calculateDependencies()

public FieldConfigBase::getTargetBundle()